What do you mean, it weights more than the earth? The earth has no weight, the earth only has mass. So you mean to say the traveler has 185,333 times earths mass? Well you said don't turn off the anti-gravity, and you are right. With that much mass the traveler would wreak havoc. Just imagine the gravitational pull. The suns mass is about 333,000 times that of earh. You see that by your calculations the traveler would have more than half the mass of the sun. WHICH IS TOTALLY CRAZY! Haha. Not trying to criticize you I love what you have done. Still CRAZY!! If that was true we would be totally -blam!-ed. Like, royally. Life on earth would be impossible.